Physiological and biochemical effects of Ti3AlC2 nanosheets on rice (Oryza sativa L.)

Hao Jiang; Yadong Li; Qian Jin; Desong Yang; Cailan Wu; Jianghu Cui

doi:10.1016/j.scitotenv.2021.145340

Physiological and biochemical effects of Ti₃AlC₂ nanosheets on rice (Oryza sativa L.)

Sci Total Environ. 2021 May 20:770:145340. doi: 10.1016/j.scitotenv.2021.145340. Epub 2021 Jan 23.

Authors

Hao Jiang¹, Yadong Li², Qian Jin³, Desong Yang⁴, Cailan Wu⁵, Jianghu Cui⁶

Affiliations

¹ College of Agriculture / Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Resources Utilization, Xinjiang Uygur Autonomous Region, Shihezi University, Shihezi, Xinjiang 832003, China; Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China.
² Key Laboratory for Biobased Materials and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
³ Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China.
⁴ College of Agriculture / Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Resources Utilization, Xinjiang Uygur Autonomous Region, Shihezi University, Shihezi, Xinjiang 832003, China.
⁵ College of Agriculture / Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Resources Utilization, Xinjiang Uygur Autonomous Region, Shihezi University, Shihezi, Xinjiang 832003, China. Electronic address: wucailan@shzu.edu.cn.
⁶ Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China. Electronic address: lantian9426@163.com.

PMID: 33736383
DOI: 10.1016/j.scitotenv.2021.145340

Abstract

MAX phase materials are a new type of nanomaterial with wide applications, but the potential effects of MAX phase materials on plants have not been reported. Herein, we selected Ti₃AlC₂ nanosheets as a typical MAX phase material to investigate its potential impacts on rice (Oryza sativa L.) at 0-1000 μg·mL^-1. The foliar application of Ti₃AlC₂ at 100 and 1000 μg·mL^-1 inhibited the growth of rice seedlings by producing excess reactive oxygen species (ROS). Furthermore, foliar spraying of Ti₃AlC₂ at 100 μg·mL^-1 decreased the stomatal aperture (78.6%) and increased the number of trichomes (100%). These responses demonstrated that the application of Ti₃AlC₂ could interfere with the immune system of plants by changing the structure and function of leaves, disturbing the activities of antioxidant enzymes. According to the above results, we concluded that the toxicity of Ti₃AlC₂ nanosheets on plants was mainly caused by the release of titanium ions. This study provides a valuable reference for understanding the impact of MAX phase materials on plants.

Keywords: Antioxidant enzyme; Growth; Rice (Oryza sativa L.); Stomatal aperture; Ti(3)AlC(2); Trichomes.

MeSH terms

Antioxidants
Oryza*
Oxidative Stress
Seedlings
Titanium / toxicity

Substances

Antioxidants
Titanium